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#34525437   2021/09/07 To Up

Ultrasound and heat treatment effects on Staphylococcus aureus cell viability in orange juice.

Ultrasounds are being considered an excellent alternative technology in juice preservation. Yet, when combined with heat treatment, the process seems to be further intensified. This work aimed to evaluate and compare the impact of ultrasounds and heat treatments, when applied alone or in combination, on Staphylococcus aureus survival in orange juice. Inoculated commercial pasteurized orange juice was treated at different times at 20, 30, 40, 50 and 60 °C. SEM analyses were applied to identify morphological changes in S. aureus cells appearance. The microbial inactivation data were fitted using two mathematical models, depending on the behaviour observed. Sonication at 20, 30, and 40 °C induced 4.02 ± 0.52, 3.80 ± 0.49 and 4.30 ± 0.74 log cycles reduction of S. aureus after treatments of 90, 60 and 60 min, respectively. The heat treatments at the same temperatures had no impact on S. aureus survival. When 50 and 60 °C were applied, more than 5-log reductions were attained for both thermosonication and heat treatments alone. A synergistic effect was observed between sonication and high temperatures. At 50 °C, the thermosonication reduced the treatment time from 60 to 35 min and the microbial load from 5.14 ± 0.08 to 10.76 ± 0.28 log cycles reduction, compared to heat treatment alone. Results from SEM images showed that cells undergo membrane damage during sonication exposure. This was observed by collapsed cells, cell disruption, and holes in the cell's membrane. Thermosonication proved to be a viable alternative to thermal pasteurization of orange juice since milder treatments can be safely applied, improving the final product quality.
Akila Amir Tahi, Sérgio Sousa, Khodir Madani, Cristina L M Silva, Fátima A Miller

1070 related Products with: Ultrasound and heat treatment effects on Staphylococcus aureus cell viability in orange juice.

1 kit5000100 µg1x10e7 cells-100ug Lyophilized1 kit50 ml100 μg200

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#34525185   2021/09/15 To Up

Outcomes of Acute Lymphoblastic Leukemia with KMT2A (MLL) rearrangement - The MD Anderson Experience.

Acute lymphoblastic leukemia (ALL) with t(4;11)(q21;q23) - KMT2A-AFF1 is associated with a poor prognosis. The impact of KMT2A rearrangements other than t(4;11) is uncertain and the benefit of allogeneic stem cell transplant (HSCT) is unclear. We reviewed adult patients with ALL treated at our institution from 1984 to 2019 and identified 50/1102 (5%) with KMT2A rearrangement: 42 (84%) with t(4;11)/KMT2A-AFF1 and 8 (16%) with other gene partners. The median age was 45 years old (range, 18 - 78 years); median white blood cell count was 109.0 x 109/L (range, 0.5 - 1573.0). The complete remission (CR) rate was 88% and the rate of measurable residual disease negativity by flow cytometry at CR was 41% (76% overall during follow-up). At the last follow-up, 14 patients were alive. The 5-year overall survival (OS) rate was 18% (95% CI, 9 - 35%) with no difference between t(4;11) and other KMT2A rearrangements (p=0.87). In a 4-month landmark analysis, the 5-year OS rate was 32% (95% CI, 14 - 70%) in patients who underwent HSCT versus 11% (95% CI, 3 - 39) in others (p=0.10). Our study confirms the poor prognosis of ALL with any KMT2A rearrangement and the role of HSCT in these patients.
Guillaume Richard-Carpentier, Hagop M Kantarjian, Guilin Tang, C Cameron Yin, Joseph D Khoury, Ghayas C Issa, Fady Gh Haddad, Nitin Jain, Farhad Ravandi, Nicholas J Short, Courtney D DiNardo, Koichi Takahashi, Marina Y Konopleva, Naval G Daver, Tapan Mahendra Kadia, Guillermo Garcia-Manero, Rebecca Garris, Susan M O'Brien, Elias J Jabbour

2144 related Products with: Outcomes of Acute Lymphoblastic Leukemia with KMT2A (MLL) rearrangement - The MD Anderson Experience.

100ug1 6 ml Ready-to-use 1 ml2100ug Lyophilized100μg100ug50 IU

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#34524793   2021/09/15 To Up

Accelerating Fe-Aqua Complex Reduction in an Efficient Solid-Liquid-Interfacial Fenton Reaction over the Mn-CNH Co-catalyst at Near-Neutral pH.

The sluggish regeneration rate of Fe and low operating pH still restrict the wider application of classical Fenton process (Fe/HO) for practical water treatment. To overcome these challenges, we exploit the Mn-CNH co-catalyst to construct a solid-liquid interfacial Fenton reaction and accelerate the Fe/Fe redox cycle at the interface for sustainably generating OH from HO activation. The Mn-CNH co-catalyst exhibits an excellent regeneration rate of Fe (∼65%) and a high tetracycline removal rate () of 0.0541 min, which is 19.0 times higher than that of the Fe/HO system (0.0027 min) at a near-neutral pH (pH ≈ 5.8), and it also attains 100% degradation of sulfamethoxazole, rhodamine B, and methyl orange. The cyclic mechanism of Fe/Fe is further elucidated in an atomic scale by combining characterizations and density functional theory calculations, including Fe specific adsorption and the electron-transfer process. Mn active sites can accumulate electrons from the matrix and adsorb Fe to form Mn-Fe bonds at the solid-liquid interface, which accelerate electron transfer from Mn-CNH to Fe and promote the regeneration of Fe at a wide pH range with a lower energy barrier. The regeneration rate of Fe in the Mn-CNH/Fe/HO system outperforms the benchmark Fenton system and other typical metal nanomaterials, which has great potential to be widely applied in actual environment remediation.
Yueshuang Mao, Pengfei Wang, Dongpeng Zhang, Yuguo Xia, Yi Li, Wenlu Zeng, Sihui Zhan, John C Crittenden

2006 related Products with: Accelerating Fe-Aqua Complex Reduction in an Efficient Solid-Liquid-Interfacial Fenton Reaction over the Mn-CNH Co-catalyst at Near-Neutral pH.

4 Membranes/Box50 ul1 Set1 Set4 Membranes/Box100 μg100 μg100 μg50μl100 ul20

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#34523547   2021/09/08 To Up

Microbial fuel cell enhanced pollutants removal in a solid-phase biological denitrification reactor: System performance, bioelectricity generation and microbial community analysis.

A novel electrochemical system of microbial fuel cell (MFC) coupled solid-phase denitrification biofilm reactor (DBR) system was established to explore the effect of simultaneous power generation and pollutant removal under different HRTs (Ⅰ:48 h; Ⅱ :24 h). The average removal rates of methyl orange, Cr (VI) and NO-N in test group were 93.0, 98.6 and 95.5% within 60 days, while those were 53.1, 72.1 and 72.7% in control. The maximum power density was 61.2 (Ⅰ) and 16.1 mW/m (Ⅱ), while average output voltage was 122 (Ⅰ) and 83.6 mV (Ⅱ). Components 1 and 2 in soluble microbial products were identified, and the humic-like and fulvic acid-like substances varied through different layers. Pseudomonas produced electricity in anode, while denitrified in denitrification layer. Importantly, symbiotic cooperation was absolutely dominant in network analysis of both anodic and denitrifying biofilms. MFC significantly improved DBR's ability to treatment co-polluted wastewater.
Chuanfu Zhao, Bing Liu, Shuangyu Meng, Yihua Wang, Liangguo Yan, Xinwen Zhang, Dong Wei

2958 related Products with: Microbial fuel cell enhanced pollutants removal in a solid-phase biological denitrification reactor: System performance, bioelectricity generation and microbial community analysis.

25 mg100 mg50 mg100ug Lyophilized3 mg24 tests100ug Lyophilized96 tests100ug Lyophilized1 L.

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#34521976   2021/09/14 To Up

Correction to: Non-invasive carbon dioxide monitoring in neonates: methods, benefits, and pitfalls.


Deepika Sankaran, Lida Zeinali, Sameeia Iqbal, Praveen Chandrasekharan, Satyan Lakshminrusimha

2811 related Products with: Correction to: Non-invasive carbon dioxide monitoring in neonates: methods, benefits, and pitfalls.



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#34521916   2021/09/14 To Up

National interest may require distributing COVID-19 vaccines to other countries.

As immunization campaigns are accelerating, understanding how to distribute the scarce doses of vaccines is of paramount importance and a quantitative analysis of the trade-offs involved in domestic-only versus cooperative distribution is still missing. In this study we use a network Susceptible-Infected-Removed (SIR) model to show circumstances under which it is in a country's self-interest to ensure other countries can obtain COVID-19 vaccines rather than focusing only on vaccination of their own residents. In particular, we focus our analysis on the United States and estimate the internal burden of COVID-19 disease under different scenarios about vaccine cooperation. We show that in scenarios in which the US has reached the threshold for domestic herd immunity, the US may find it optimal to donate doses to other countries with lower vaccination coverage, as this would allow for a sharp reduction in the inflow of infected individuals from abroad.
Tiziano Rotesi, Paolo Pin, Maria Cucciniello, Amyn A Malik, Elliott E Paintsil, Scott E Bokemper, Kathryn Willebrand, Gregory A Huber, Alessia Melegaro, Saad B Omer

2637 related Products with: National interest may require distributing COVID-19 vaccines to other countries.

25 G100 µg 500 G 1 G200 1 g1 module 5 G25 mg1 kit25 mg

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#34520338   // To Up

sp. nov., a rice-associated rhizobacterium with antibacterial activity against .

A novel rhizobacterium, designated strain NEAU-GH312, with antibacterial activity against was isolated from rhizosphere soil of rice (Heilongjiang Province, PR China) and characterized with a polyphasic approach. Cells of strain NEAU-GH312 were Gram-stain-negative, aerobic, non-spore-forming, motile with peritrichous flagella and rod-shaped. Colonies were light orange, convex and semi-translucent on Reasoner's 2A (R2A) agar after 2 days of incubation at 28 °C. Growth was observed on R2A agar at 10-40 °C, pH 4.0-8.0 and with 0-5 % (w/v) NaCl. The respiratory quinone was ubiquinone Q-8. The major cellular fatty acids of strain NEAU-GH312 were C 7 and/or C 6, C and C 7 and/or C 6. The main polar lipids were phosphatidylglycerol, phosphatidylethanolamine and diphosphatidylglycerol. Phylogenetic analyses confirmed the well-supported affiliation of strain NEAU-GH312 within the genus , close to the type strains of THG-RS2O (98.7 %), NS9 (98.7 %) and TSA1 (98.6 %). Strain NEAU-GH312 had a genome size of 6.68 Mb and an average DNA G+C content of 66.3 mol%. Based on the genotypic, phenotypic and chemotaxonomic data obtained in this study, strain NEAU-GH312 could be classified as representative of a novel species of the genus , for which the name sp. nov. is proposed, with strain NEAU-GH312 (=DSM 109722=CCTCC AB 2019142) as the type strain.
Chenxu Li, Peng Cao, Chuanjiao Du, Xue Zhang, Hui Bing, Lei Li, Peng Sun, Wensheng Xiang, Junwei Zhao, Xiangjing Wang

2503 related Products with: sp. nov., a rice-associated rhizobacterium with antibacterial activity against .

100 assays 96 Tests 500 assays100ug1 kit100 assays100tests100ug192 samples

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#34520203   2021/09/14 To Up

Heterometal-Organic Cages as Photo-Fenton-like Catalysts.

Metal-organic cages, a class of supramolecular containers constructed by the self-assembly of metal ions and organic ligands, show great promise as catalytic agents. In this work, we designed and synthesized a series of rhombic dodecahedral Ni-Cu heterometal imidazolate cages (NiCuL) that can act as highly active photo-Fenton-like catalysts. These cages possess a high ability to generate hydroxyl radicals (OH) under visible light in the presence of HO, which can rapidly degrade organic pollutants (e.g., rhodamine B, methylene blue, and methyl orange) into CO and HO. Besides, they are robust catalysts, with high catalytic activity and reusability under conditions in high HO concentration, providing potentially advanced materials for degrading persistent organic pollutants.
Xiao-Wei Zhu, Fen-Ling Zhuang, Zi-Ye Chen, Shu Zhou, Yu-Bai Wei, Xiao-Ping Zhou, Dan Li

2708 related Products with: Heterometal-Organic Cages as Photo-Fenton-like Catalysts.

1 kit100 reactions20050 assays961000 assays50 assays50 ug 11 plate100

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